U.S. patent application number 13/945248 was filed with the patent office on 2015-01-22 for circuit for changing load operation using temporary power-off means.
The applicant listed for this patent is Chen-Hao CHANG, Chih-Ju HUANG. Invention is credited to Chih-Ju HUNG.
Application Number | 20150026499 13/945248 |
Document ID | / |
Family ID | 52344607 |
Filed Date | 2015-01-22 |
United States Patent
Application |
20150026499 |
Kind Code |
A1 |
HUNG; Chih-Ju |
January 22, 2015 |
CIRCUIT FOR CHANGING LOAD OPERATION USING TEMPORARY POWER-OFF
MEANS
Abstract
A circuit for changing load operation using temporary power-off
means having a power-off detection circuit with input end connected
to a power source and its output end is connected to a
microprocessor (MCU) connected to at least one load driving
circuit. A load appliance is mounted on each of the load driving
circuits. The microprocessor (MCU) has a program controlling each
load appliance. During operation, the power is restored immediately
after the power source is temporarily powered off, such that the
power-off detection circuit detects a temporary turned-off signal
and sends the signal to the microprocessor (MCU). Accordingly, the
program to control each of the load appliances in the
microprocessor (MCU) manipulates each load appliance for performing
another operation or function.
Inventors: |
HUNG; Chih-Ju; (New Taipei
City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
HUANG; Chih-Ju
CHANG; Chen-Hao |
New Taipei City
New Taipei City |
|
TW
TW |
|
|
Family ID: |
52344607 |
Appl. No.: |
13/945248 |
Filed: |
July 18, 2013 |
Current U.S.
Class: |
713/324 |
Current CPC
Class: |
G06F 1/3206 20130101;
G06F 1/30 20130101; G06F 1/28 20130101 |
Class at
Publication: |
713/324 |
International
Class: |
G06F 1/32 20060101
G06F001/32 |
Claims
1. A circuit for changing load operation using temporary power-off
means, which is provided with a power-off detection circuit, and is
characterized in: an input end of the power-off detection circuit
is connected to a power source for power supply, and a output end
of the power-off detection circuit is connected to a microprocessor
(MCU), the microprocessor (MCU) being connected to at least one
load driving circuit, a load appliance being mounted on each of the
load driving circuits; a switch being provided between the
power-off detection circuit and the power source; the
microprocessor (MCU) having a program for controlling each load
appliance; through shortly turning on/off the switch, the power of
the power source being restored immediately after power-off, such
that the power-off detection circuit detecting a temporary
power-off signal of the power source and sending the signal to the
microprocessor (MCU) for the program to control each load appliance
in the microprocessor (MCU) according to the signal to manipulate
each load appliance to perform another operation or function.
2. The circuit for changing load operation using temporary
power-off means as claimed in claim 1, wherein a built-in power
supply circuit is provided between the power-off detection circuit
and the microprocessor (MCU), the built-in power supply circuit
being connected to the power-off detection circuit and the
microprocessor (MCU); when the switch being shortly turned on/off,
the power source being restored immediately after power-off, the
microprocessor (MCU) entering low power consumption mode during
power outage, while the built-in power supply circuit supplying
power to the microprocessor (MCU) to keep it working normally.
3. The circuit for changing load operation using temporary
power-off means as claimed in claim 2, wherein the power source is
a DC system power supply.
4. The circuit for changing load operation using temporary
power-off means as claimed in claim 3, wherein the power-off
detection circuit is a comparator for detecting the waveform after
the DC system power supply is powered off, and sends the temporary
power-off signal based on the waveform to the microprocessor (MCU),
such that the program for controlling each load appliance in the
microprocessor (MCU) manipulates each load appliance according to
the signal to perform another operation or function.
5. The circuit for changing load operation using temporary
power-off means as claimed in claim 3, wherein the built-in power
supply circuit consists of an DC to AC converter connected in
series with a diode and two capacitors connected in parallel, the
two capacitors storing electrical energy before power-off; when the
switch being shortly turned on/off, the power source being
temporarily powered off and then powered on immediately; during
power outage, due to unidirectional conduction characteristics of
the diode, the two capacitors providing the whole electricity
stored before power-off to the microprocessor (MCU) to keep it
working normally.
6. The circuit for changing load operation using temporary
power-off means as claimed in claim 2, wherein the power source is
an AC system power supply.
7. The circuit for changing load operation using temporary
power-off means as claimed in claim 6, wherein the power-off
detection circuit is a transformation element connected in parallel
with a zener diode to detect the waveform after the AC system power
supply is powered off, and sends a temporary power-off signal based
on the waveform to the microprocessor (MCU) such that according to
the signal the program to control each load appliance in the
microprocessor (MCU) manipulates each load appliance to manipulate
each load appliance to perform another operation (function).
8. The circuit for changing load operation using temporary
power-off means as claimed in claim 6, wherein the built-in power
supply circuit consists of an AC to DC converter connected in
series with a diode and two capacitors connected in parallel, the
two capacitors capable of restoring electrical energy before
power-off; when the switch is temporarily turned on/off, the power
source restores power immediately after temporary power-off; during
power outage, due to unidirectional conduction characteristics of
the diode, the two capacitors provide the whole electrical energy
restored before power-off to the microprocessor (MCU) to keep it
working normally.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a circuit for changing load
operation using temporary power-off means, particular to a circuit
for manipulating the function of each load using temporary
power-off means.
[0003] 2. Description of Prior Art
[0004] Generally, an electronic appliance with remote control has a
remote control signal receiving circuit for receiving a remote
control signal to change the operation of the electronic appliance
to a specific function according to the remote control signal.
[0005] Although it is convenient to use remote control to
manipulate an electronic appliance, the remote control gets lost
easily and needs to install the battery, which causes
inconvenience.
SUMMARY OF THE INVENTION
[0006] In view of the foregoing disadvantages in the art, the
present invention is made based on the previous accumulated
experiences and technology, through continuous research,
experiments and improvement, to devise a new circuit for changing
load operation using temporary power-off means to address the
deficiency in the art.
[0007] It is an objective of the present invention to provide a
circuit for changing the load operation using temporary power-off
means to manipulate the function of each load with the temporary
power-off means.
[0008] In accordance with the above objective, the present
invention is provided with a power-off detection circuit which is
connected to a microprocessor (MCU) and a power source. The
microprocessor (MCU) is further connected to at least one load
driving circuit. A load appliance is mounted on each of the load
driving circuits. Also, a switch is provided between the power-off
detection circuit and the power source. A program is installed in
the microprocessor (MCU) for controlling each load appliance.
During operation, the switch can be shortly turned on/off and the
power is restored immediately after the power source is temporarily
powered off, such that the power-off detection circuit can detect a
temporary power-off signal and send the signal to the
microprocessor (MCU). According to the signal, the program to
control each of the load appliances in the microprocessor (MCU)
manipulates each load appliance for performing another operation
(function). Accordingly, a variety of operations/functions
regarding remote control of each load appliance can be performed by
temporarily turning on/off the switch.
[0009] The objective, shape, structure, characteristics, and
efficacy of the present invention will become more apparent by
describing in detail the embodiments thereof with reference to the
attached drawings of which:
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] FIG. 1 shows a major circuit diagram according to the
present invention;
[0011] FIG. 2 shows a power-off detection circuit according to the
present invention;
[0012] FIG. 3 shows another power-off detection circuit according
to the present invention;
[0013] FIG. 4 shows a circuit diagram of a power source according
to the present invention;
[0014] FIG. 5 shows another circuit diagram of the power source
according to the present invention;
[0015] FIG. 6 shows a load driving circuit diagram according to the
present invention;
[0016] FIG. 7 is a flowchart showing the operation of the present
invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0017] The present invention is directed to a "circuit for changing
load operation using temporary power-off means". Please refer to
FIG. 1, which shows a power-off detection circuit 11 that is
connected to a microprocessor (MCU) 12 and a power source 13 (DC or
AC system power supply). The microprocessor (MCU) 12 is connected
to at least one load driving circuit 14. A load appliance 15 (in
the present invention, the load appliance may be bulbs, LED
lanterns, electric curtains, fans, etc.) is mounted on each of the
load driving circuits 14. Also, a switch 16 is provided between the
power-off detection circuit 11 and the power source 13. The
microprocessor (MCU) 12 has a program for controlling each of the
load appliances.
[0018] During operation, the switch 16 can be temporarily turned
on/off, such that the power source 13 can be restored immediately
after temporary power-off and the power-off detection circuit 11
can detect a temporary power-off signal of the power source 13 and
send the signal to the microprocessor (MCU) 12. According to the
signal, the program for controlling each said load appliance 15 in
the microprocessor (MCU) 12 controls each load appliance for
performing another operation (function), for example, LED lights
set from original monochrome display to multicolor marquee.
Accordingly, various operations and functions regarding the remote
control of each load appliance can be performed by temporarily
turning on/off the switch.
[0019] Refer to FIG. 1 again, a built-in power supply circuit 17 is
provided between the power-off detection circuit 11 and
microprocessor (MCU) 12. The built-in power supply circuit 17 is
connected to the power-off detection circuit 11 and the
microprocessor (MCU) 12. When the switch 16 is shortly turned
on/off, the power source 13 will be temporarily powered off and
then powered on immediately, and the microprocessor (MCU) enters
Low Power Consumption mode during power outage, while the built-in
power supply circuit supplying power to the microprocessor (MCU) to
keep it working normally.
[0020] Please refer to FIGS. 1 and 2, where the power source 13 can
be either a DC or AC system power supply. When served as a DC power
source 21, the power-off detection circuit 11 may be a comparator
22 for detecting a waveform 23 after the DC system power supply 21
is powered off and sending the temporary power-off signal to the
microprocessor (MCU) 12 based on the waveform 23, such that the
microprocessor (MCU) 12 utilizes the program controlling each load
appliance to manipulate each load appliance 15 to perform another
operation (function) according to the temporary power-off signal.
As shown in FIG. 2, before power-off, the waveform of the DC system
power supply 21 is a high potential DC waveform; after power-off,
the waveform changes to a no-potential waveform 23.
[0021] Please refer to FIGS. 1 and 3, where the power source 13 can
be either a DC or AC system power supply. When served as an AC
system power supply 31, the power-off detection circuit 11 can be a
transformation element 32 which is connected in parallel with a
zener diode 33 to detect the waveform 34 after the AC system power
supply 31 is powered off and sends the temporary power-off signal
to the microprocessor (MCU) 12 according to the waveform 34, such
that the program for controlling each load appliance in the
microprocessor (MCU) 12 manipulates each of the load appliances 15
to perform another operation (function). As shown in FIG. 3, before
power-off, the waveform with regards to the AC system power supply
31 is a square waveform or a sinusoidal waveform; after power-off,
the waveform changes to a no-potential waveform.
[0022] Please refer to FIGS. 1 and 4, where the power source 13 can
be either a DC or AC system power supply. When served as a DC
system power supply 21, the built-in power supply circuit 17
consists of a DC to AC converter 171 connected in series with a
diode D1 and two capacitors C1, C2 connected in parallel. The two
capacitors C1, C2 can store electrical energy before power-off.
When the switch 16 is shortly turned on/off, the power source 13
will be temporarily powered off and then powered on immediately.
During power outage, due to the unidirectional conduction
characteristics of the diode, the two capacitors can provide the
whole electricity stored before power-off to the microprocessor
(MCU) to keep it working normally. Also, in the case that the two
capacitors C1, C2 are supplied with power, the reverse power flow
into the AC system power supply 31 can be avoided by using the
diode D1 to limit the electricity of the two capacitors C1, C2 to
flow into the microprocessor (MCU) 12 in one way, such that the
microprocessor (MCU) 12 cannot be supplied with power.
[0023] Please refer to FIGS. 1 and 5, where the power source 13 can
be either a DC or AC system power supply. When served as an AC
system power supply 31, the built-in power supply circuit 17
consists of an AC to DC converter 173 (connected in series with a
diode D1 and connected in parallel with the two capacitors C1, C2.
The two capacitors C1 and C2 can store electrical energy before
power off. When the switch 16 is shortly turned on/off, the power
source 1 will be temporarily powered off and then powered on
immediately. During power outage, due to the unidirectional
conduction characteristics of the diode, the two capacitors can
provide the whole electricity stored before power-off to the
microprocessor (MCU) to keep it working normally. Also, in the case
that the two capacitors C1, C2 are supplied with power, through
one-way limit by the diode D1 to limit the electricity of the two
capacitors C1, C2 to flow into the microprocessor (MCU) 12 in one
way, this can avoid the reverse power flow into the AC system power
supply 31 such that the microprocessor (MCU) 12 cannot be supplied
with power.
[0024] Please refer to FIGS. 1 and 6, there is one or a plurality
of load driving circuits 14. A load appliance 15 is mounted on each
of the load driving circuits 14. According to the temporary
power-off signal, the program to control each load appliance in the
microprocessor (MCU) 12 manipulates each load appliance 15 to
perform another operation (function). Accordingly, various
operations or functions regarding the remote control of each load
appliance can be performed by temporarily turning on/off the switch
16.
[0025] Refer to FIGS. 1 and 6 again, when the load appliance 15 is
a LED light set, the load driving circuit 14 is RELAY, BJT, or MOS;
when the load appliance 15 is an impedance load(e.g. incandescent
light bulbs, electric resistance), the load driving circuit 14 is
RELAY, SCR, or TRIAC; when the load appliance 15 is a fluorescent
lamp, the load driving circuit 14 is fluorescent lamp ballast
(including electronic switch); when the load appliance 15 is a
motor, the load driving circuit 14 is a motor drive circuit
(including electronic switch).
[0026] Please refer to FIG. 7, when the switch 16 is shortly turned
on/off for various operations/functions regarding remote control of
each load appliance, the microprocessor (MCU) 12 is processed
according to the following steps:
[0027] First, initialize the program.
[0028] Then, determine if a power-off signal is detected? If yes,
proceed with step (3); otherwise, perform step (2).
[0029] Next, execute the preset program for controlling the load
appliance 15 to change the load operation function; then perform
step (2).
[0030] As described above, the circuit for changing load operation
using temporary power-off means in the present invention indeed has
an unprecedented innovation structure and is not made in public,
and thus has novelty without doubts. Also, the present invention
has the unique feature and function that is different from the
conventional technology, and thus is compliable with the provisions
of the Patent Law. Accordingly, the patent application is
filed.
[0031] What described above are for illustrating the preferred
embodiments of the present invention, not for limiting the
structure and features of the present invention. Any person skilled
in the art shall be able to make modifications and changes to the
embodiments without departing from the spirit of the present
invention.
* * * * *